Steam and hot-water boiler



No. 620,93L 'Patented Mar. l4', l899.

W. KANE.

STEAM AND HOT WATER BOILER.

(Application filed. July 13, 1898.)

(No Model.)

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" Nrrnn STATES PATENT OFFICE.

\VILLIAM KANE, OF PHILADELPHIA, PENNSYLVANIA. I

STEAM AND HOT-WATER BOILER.

SPECIFICATION forming part of Letters Patent No. 620,931, dated March14, 1899.

Application filed J'ul 13, 1898. Serial 63 (K011011613 To all whom itmay concern.-

Be it known that 1, WILLIAM KANE, of the city and county ofPhiladelphia, State of Pennsylvania, have invented an Improvement inSteam and Hot-Water Boilers, of which the following is a specification.

My invention relates to steam and hot-water boilers; and it consists ofthe improvements which are fully set forth in the followingspecification and are shown in the accompanying drawings.

It is one of the objects of my invention to provide a low-pressureboiler of simple and economical construction for the generation of steamor hot water which shall be quick and economical in its action inraising the temperature of the water or in generating steam.

It is also one of the objects of my invention to enable thewater-circulating tubes and parts connected with them to be easily andquickly removed for the purpose of making repairs, so that the delay andannoyance usual to the making of repairs may be greatly reduced.

While my improved boiler may be used, so far as many of its principalfeatures are concerned,with any suitable means for supplying heat, it isone of my objects to enable gaseous fuel to be satisfactorily employedand to avoid the escape of gases and odors therefrom into the room orbuilding, and a part of my invention relates to improvements designedforthis object.

By employing a series of water-tubes extending from a water-chamber ofsmall cubical capacity, to which the heat is applied, into the dome orchamber in which the body of water is contained and arranging such tubesso that a portion thereof projects above the normal water-level in saiddome or chamber, while the others are below the waterlevel, I am able toobtain a more efiicient circulation and to raise the temperature of theWhole body of water very rapidly.

By employing a removable crown plate forming the base of the dome orupper chamber and connecting the water-tubes thereto I am able to easilyand quickly remove the water-tubes and the water-chamber with which theyare connected from the outer shell or casing of the boiler by thedisconnection and removal of the crown-plate.

In the accompanying drawings, Figure 1 is a longitudinal verticalsectional View of a boiler embodying my invention. Fig. 2 is ahorizontal sectional view of the same on the line 00 a; of Fig. 1, andFig. 3 is a plan view of the burner.

A is the outer shell or body, forming a hollow chamber A, which isclosed at the top by a crown-plate or diaphragm B.

G is a dome or cap located above the crownplate B and forming therewithan upper closed water and steam chamber 0.

In my preferred construction the crownplate B is detachably securedbetween flanges a c of the shell and dome by bolts 12. To facilitate theremoval of the bolts, the flanges a c and the edge of the plate B may beprovided with notches e, in which the shanks of the bolts may fit, thusallowing the bolts to be removed when the nuts are loosened.

D is a hollow water-chamber located in the base of the chamber A andprovided with a series of water tubes E F, extending up through thechamber A and projecting through the crown-plate B, to which they aresecured. A portion of these tubes, as E, are longer than the tubes F andproject to a greater distance into the chamber 0, as shown, and thesetubes are preferably arranged alternately long and short. Thewater-chamber D is connected with a suitable water-supply pipe or returnG.

Heat may be supplied to the Water-chamber D in any convenient manner.

with gaseous fuel supplied by a burner H, located below thewater-chamberD.

The preferred construction of the waterchamber D is illustrated in thedrawings and consists of concentric tubular rings 61 cl, united bytubular connections 61 When this form of water-chamber is employed,theburner H is correspondingly constructed, consisting of concentricannular pipes g g, united by connections 9 as shown in Fig. 3.

The chamber A may be provided with outlets near the top, through whichthe gases or products, of combustion arising from the burners may passoff through pipes I and be conducted off to a flue or outlet, so as notto escape into the room or cellar in which the heater is located. Toprevent the formation I have, however, shown my boiler adapted for useof an unequal draft by the escape of the gases, I prefer to locate oneoutlet f on each side, as shown.

The chamber G is provided with the usual steam 'or water outlet orsupply pipe J, by which the steam or hot water is conducted to theheaters, radiators, 850., through the building, and the return of thecool water, or water of condensation, takes place through the pipe G tothe chamber D.

The dome C may be provided with the usual safety-valve and pressure andwater gages.

In utilizing the boiler for the generation of steam the water-level ismaintained at a point between the tops of the long and short tubes, sothat a body of water is maintained above the tops of the short tubes,while the long tubes project above into the steam-space. The heat fromthe burners I-l passes up into the chamber A, heating the chamber D andalso the tubes E F and plate B. WVhen heat is applied to the chamber D,the heated water rises in the longer tubes E and overflows or boilsoverinto the body of cool water in the chamber 0. Owing to theconstruction of the water-chamber D only a small volume of water issubjected to the heat at one instant, and consequently the temperatureof this small volume of water will be very quickly raised, and as it isimmediately introduced into the body of cool water it acts to quicklyraise the temperature of the main body of water. This constructiongreatly facilitates circulation, as the long tubes commence to eject hotwater into the open steam-space almost immediately the heat is applied,although the main body of the water still remains comparatively cool.From this it results that the temperature of the main body of water inthe chamber 0 is materially raised by the introduction of this heatedwater from the tubes E even before the heat, acting upon the plate 13,is sufficient to materially affect the temperature. The heat arisingfrom the burners II acts first to heat the small volumes of water in thechamber D and to cause that heated water to rise in the tubes E and flowinto the chamber 0, and then arising in the chamber A acts directly uponthe plate B to further raise the temperature of the main body of water.

In utilizing the boiler as a hot-water heater the chamber 0 ismaintained full of water, the circulation being induced by thedifference in the length of the pipes E F.

As the tubes E F are connected with the crown-plate B and water-chamberD, these parts may be easily removed from the shell or body for thepurpose of making repairs. To accomplish this, the bolts 1) are removedand the dome C lifted oit, the pipe G is disconnected, and thecrown-plate B, with the tubes E F and water-chamber D, may then belifted out of the shell A.

This construction enables repairs to be made very easily andexpeditiously.

The details of construction shown may be varied without departing fromthe invention.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is as follows:

1. In a steam or hot-water boiler, the combination of an outer shell, aplate detachably supported thereby, a series of circulatingtubes carriedby said plate and extending down to the lower part of the outer shell,and a water-chamber carried by the lower ends of said tubes andcommunicating therewith, whereby said plate, tubes and water-chamber maybe removed as an entirety from said outer shell.

2. In a steam or hot-water boiler, the combination of an outer shell, aplate detachably supported thereby, a detachable dome over said plate, aseries of circulating-tubes carried by said plate and extending down tothe lower part of said outer shell, and a waterchamber carried by thelower ends of said tubes and communicating therewith,whereby said plate,tubes and water-chamber may be removed as an entirety from said outershell.

3. In a steam and hot-water boiler, the com bination of an outer shell,a removable horizontally-disposed tubular water-chamber located in saidshell, and a series of circulating-tubes connected with said removablewater-chamber and communicating therewith, whereby said water-chamberand tubes may be removed as an entirety from said shell.

4. In a steam and hot-water boiler, the combination of an outer shell, adome, a crownplate located between said dome and shell and detachablyconnected therewith, a removable water-chamber located in said shell,and a series of tubes connected at their upper ends with saidcrown-plate and at their lower ends with said water-chamber and openingthrough said crown-plate.

5. In a steam and hot-water boiler, the outer body or casing A, 0,formed with an upper closed chamber C, a water-chamber D located at adistance below the base of the chamber O, and a series of tubes leadingfrom the water-chamber D and opening in to the chamber O.

6. In a steam and hot-water boiler, the outer body or casing A, 0,formed with an upper closed chamber 0, a water-chamber D located at adistance below the base of the chamber O, and a series of tubes leadingfrom the water-chamberD and opening into the chamber 0, part of saidtubes projecting into said chamber for a greater distance than others.

7. In a steam and hot-water boiler, the outer body or casing A, 0,formed with an upper closed chamber 0, a water-chamber D located atadistancc below the base of the chamber O, and a series of alternatelylong and short tubes E, F, leading from the water-chamber D and openinginto the chamber G.

8. In a steam and hot-water boiler, the combination of an outer shell, acrown-plate carried by said outer shell and closing the top thereof,adome located over said crown-plate, a water-chamber located in the lowerpart of said outer shell, and a series of tubes connected at their lowerends with said waterchamber and projecting upward through thecrown-plate, a part of said tubes projecting upward through saidcrown-plate a greater distance than others.

9. In a steam and hot-water boiler, the combination of an outer casingprovided with an upper closed chamber, a water-chamber located belowsaid upper closed chamber and consisting of a horizontally-disposedtubular structure, and a series of tubes leading from the water-chamberand projecting into said upper closed chamber, a part of said tubesprojecting upward into said-upper chamber for a greater distance thanothers.

10. In a steam and hot-water boiler,the combination of an outer casingprovided with an upper closed chamber, a horizontally-disposed tubularwater-chamber, located vbelow said upper chamber, a series of tubesleading from said tubular water-chamber and opening into upper closedchamber, and a tubular gasburner located below said tubularwaterchamber.

11. In a steam and hot-water boiler,the combination of an outer casingprovided with an upper closed chamber, a tubular water-chamber composedof the tubular rings d, d, and connecting portions 01 located below saidupper chamber, a series of tubes leading from said tubular water-chamberand opening into upper closed chamber, and a tubular gasburner locatedbelow said tubular waterchamber.

12. In a steam and hot-water boiler,the combination of an outer shell, acrown-plate carried by said outer shell and closing the top thereof,saidouter shell beingprovided with an outlet for the escape of gases belowsaid crownplate, a dome located over said crown-plate, a water-chamberlocated in the lower part of said outer shell, a series ofwater-circulating tubes connected with said water-chamber at their lowerends, and opening at their upper ends through said crown-plate, and agasburner located below said water-chamber.

13. In a steam and hot-water boiler, the combination of an outer shell,a crown-plate carried by said outer shell and closing the top thereof,said outer shell being provided with an outlet for the escape of gasesbelow said crown-plate, a pipe or fiue I leading from said outlet, adome located over said crown-plate, a water-chamber located in the lowerpart of said outer shell, a series of water-circulating tubes connectedwith said water-chamber at their lower ends, and opening at their upperends through said crown-plate, and a gasburner located below saidwater-chamber.

In testimony of which invention I hereunto

